Sweet Revenge

The manga centers on homicide detective Hiroki Dan, the son of a former police superintendent general, and who seems to be on the fast track to career success. He maintains a hidden identity as a serial killer responsible for more than a hundred murders of people he deems beyond the reach of the law.

Hyeongoh, the first place student at school, is disabled and has a knack for getting ridiculed by the school's bullies. With no help and no way out, he finds himself in a despairing situation...until someone appears to stand by his side!

“Is it okay to kill people?”
Shin Uruma, a sixth-grade student, was named "Experimental body: A" by five of his classmates and was severely bullied and lived in hell. His only peace was with his brother, who loved him, and his parents, who protected him.... . until the five monsters killed his family.
When he finally loses everything and faces true hell, a dark "wish" is born.

Yeon Jang Hwa is a more or less average college student: she attends a pretty good university, is not too ugly, and has a nice boyfriend. Her a twin sister, Hong Reon, on the other hand, is the opposite. Being the good sister she is, Jang Hwa sets out to help her twin sister... but at what price? The truth is in the details.

Yoseob, normally very quiet and composed, is in the police station convicted of stabbing 8 civilians with a knife. Everyone's wondering whether he actually committed the crime. Does he, a mere high-schooler, really have any reason to have done such a horrifying act?Does his obsessive love for his older brother, Jaeha, have something to do with it?

Jungho is bullied to the point of self-harm, until one day, his prayers are answered by Mephistopheles, the archdevil. Mephisto offers Jungho magical powers that would allow him to take revenge on his bullies, and in return, asks for his soul. It’s an easy choice for Jungho, who thinks nothing can be worse than the living hell that is his life. But what he doesn’t know is that there are greater forces at work, and that he is but a pawn in a much larger game played by demons and exorcists

Gang Hanul, a outcast that has a natural fighting ability by the name of ”Golden Sight”. After witnessing his friend in a horrific event he wants to get back at the bullies. The former breadwinner, Gang Hanul asks a former fighter to train him so that he can take down the bullies.

*ON WEBTOON*
There is a serial killer in my house!

After Kang hu’s death from bullying, the family was torn into pieces. His younger brother, suppresses his resentment, and heads back to school. The story begins exactly one year after kang hu’s death where the his brother seeks to destroy the delinquent circle…

*ON WEBTOON*
Once the bullies target you, it’s game over. The school is run by tyrants whose favorite hobby is tormenting the weakest kids in class. But then Gray arrived. This mysterious new student threatens to dismantle the established order. He may be small in stature, but his calculative and brutal fighting leaves unsuspecting opponents lying on the floor begging for mercy. Now the school's toughest bullies have to scramble to take down this new and unusual hero.